#!/bin/sh
# XBPS INSTALL script — post-install and post-upgrade paths.
#
# Arguments: $1=ACTION $2=PKGNAME $3=VERSION $4=UPDATE $5=CONF_FILE $6=ARCH
#
# Actions: pre (before files extracted), post (after files extracted)
# UPDATE: "yes" on upgrade, "no" on fresh install
set -eu

STORE_DIR="/var/lib/fenris"
STORE_DB="${STORE_DIR}/observations.db"
STORE_BAK="${STORE_DIR}/observations.db.bak"
RUNTIME_PYTHON="/usr/bin/python3"
VENDOR_DIR="/opt/fenris/vendor"

ACTION="$1"
UPDATE="$4"

case "${ACTION}" in
    pre)
        # Migration guard — abort if make-install remnants detected
        MARKER="/var/lib/fenris/manifest.txt"
        if [ -f "${MARKER}" ]; then
            echo >&2
            echo >&2 "Fenris make-install remnants detected — refusing to install."
            echo >&2
            echo >&2 "Migrate to the package with:"
            echo >&2 "  sudo make uninstall   # removes make-install files, preserves store + config"
            echo >&2 "  sudo xbps-install fenris"
            echo >&2
            echo >&2 "See: https://git.bongbetic.com/xavierk/Fenris/blob/main/docs/spec/release-packaging.md#9-migration-from-make-install-systems"
            echo >&2
            exit 1
        fi
        ;;
    post)
        if [ "${UPDATE}" = "yes" ]; then
            # Upgrade — snapshot, migration, runit-aware reload
            if [ -f "${STORE_DB}" ]; then
                cp "${STORE_DB}" "${STORE_BAK}" 2>/dev/null || true
            fi
            if [ -d "${VENDOR_DIR}" ] && [ -f "${STORE_DB}" ]; then
                PYTHONPATH="${VENDOR_DIR}" "${RUNTIME_PYTHON}" -c "
from fenris.store import migrate_to_latest
from pathlib import Path
n = migrate_to_latest(Path('${STORE_DB}'))
print(f'Fenris migration: {n} step(s) applied') if n else None
" 2>&1 || echo "Fenris: migration skipped (store not yet initialized)"
            fi
            # Ensure log directory exists on upgrade
            groupadd -f fenris
            install -d -o root -g fenris -m 2770 /var/log/fenris-collect 2>/dev/null || true
        else
            # Fresh install — runit service setup
            groupadd -f fenris
            install -d -o root -g fenris -m 2770 "${STORE_DIR}" 2>/dev/null || true
            # Mark runit service as dormant (down) for fresh install
            if [ -d /etc/sv/fenris-collect ] && [ ! -e /var/service/fenris-collect ]; then
                touch /etc/sv/fenris-collect/down
            fi
            # Ensure log directory exists
            install -d -o root -g fenris -m 2770 /var/log/fenris-collect 2>/dev/null || true
        fi
        ;;
esac

exit 0